Narrative:
Passenger presented dog for transport on flight 16 from New York LaGuardia airport to Milwaukee, Wisconsin. Prior to loading dog on the aircraft, a Midwest agent observed blood in the animal container. Passenger was advised of the dog's condition and brought to the dog. The passenger examined her dog. She informed the airline agent this had occurred before, the dog was a seasoned traveler and the dog would calm down with time. She insisted the dog is flight worthy and insisted we load the dog into the aircraft. The dog and container were cleaned and animal was loaded onto the aircraft with passenger observing the loading. At this time, the dog was given water and appeared calm. Upon arrival in Milwaukee, agents unloading the dog observed blood on the dog and in the container.

Cause of Incident:
Injuries were sustained due to the dog clawing on door of shipping container.

Corrective Actions:
Revise policies and procedures to ensure that acceptance personnel understand the need to observe pet behavior and deny boarding to any pet if blood is observed.